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Unit Rate and Proportional Relationships Test Re ...
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How is a proportion formed?
2 or more equivalent ratios
Is the data Proportional or NonProportional? Explain.
NP - doesn't pass through the origin
Explain 2 ways you can know this data is NonProportional.
Ratios of y/x are not equal and it does not pass through the origin
Is the data proportional? If yes, what is the value of k?
Proportional, k = -5/2 or -2.5
Proportional or NonProportional?
NonProportional
How many lines represent a proportional relationship?
1
Proportional or Non Proportional?
Proportional
How do you write the equation of a proportional relationship?
y = kx
What is the better deal: 13 lb bag for $25.50 or a 27 lb bag for $32.25. Which bag is the better buy?
27 lb bag
Kevin put 5 gallons of gas in his car and it cost him $10.50. How much did each gallon of gas cost that Kevin pumped into his car?
$2.10 per gallon
How is a unit rate expressed as a ratio with a _____________ of _______
Ratio with a denominator of 1
Is this data proportional? If yes, write an equation using the constant of proportionality.
y = 18.5x
Jess walked 6.5 miles in 2 hours. If she continues at this rate, how many miles can she walk in 4.5 hours? Round to the nearest whole number
About 15 miles
Is this data proportional? If yes, what is the value of k?
Yes, k=1.5
P or NP
Proportional
Is the data proportional? If yes, what does k =
Yes - it is straight and through the origin; k = 1000
What is the meaning of the unit rate in context?
10 cm/min
How do you know the data is proportional?
k = 3 for all ratios of y/x
What is the meaning of the unit rate in context?
3 ft/min
This distance traveled is proportional to time. What is k?
k = 45 or 45 mi/hr
This data is proportional. What is the equation of the line?
y = 6x


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